US7461898B2 - Vehicle seat position adjusting device - Google Patents

Vehicle seat position adjusting device Download PDF

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Publication number
US7461898B2
US7461898B2 US11/090,257 US9025705A US7461898B2 US 7461898 B2 US7461898 B2 US 7461898B2 US 9025705 A US9025705 A US 9025705A US 7461898 B2 US7461898 B2 US 7461898B2
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United States
Prior art keywords
seat
relative
vehicle seat
plate
vehicle
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US11/090,257
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English (en)
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US20050231016A1 (en
Inventor
Yasuhiro Kojima
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Aisin Corp
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Aisin Seiki Co Ltd
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First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=34879986&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=US7461898(B2) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Aisin Seiki Co Ltd filed Critical Aisin Seiki Co Ltd
Assigned to AISIN SEIKI KABUSHIKI KAISHA reassignment AISIN SEIKI KABUSHIKI KAISHA ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: KOJIMA, YASUHIRO
Publication of US20050231016A1 publication Critical patent/US20050231016A1/en
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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60N—SEATS SPECIALLY ADAPTED FOR VEHICLES; VEHICLE PASSENGER ACCOMMODATION NOT OTHERWISE PROVIDED FOR
    • B60N2/00—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles
    • B60N2/02—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles the seat or part thereof being movable, e.g. adjustable
    • B60N2/04—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles the seat or part thereof being movable, e.g. adjustable the whole seat being movable
    • B60N2/12—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles the seat or part thereof being movable, e.g. adjustable the whole seat being movable slidable and tiltable
    • B60N2/123—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles the seat or part thereof being movable, e.g. adjustable the whole seat being movable slidable and tiltable and provided with memory locks
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60N—SEATS SPECIALLY ADAPTED FOR VEHICLES; VEHICLE PASSENGER ACCOMMODATION NOT OTHERWISE PROVIDED FOR
    • B60N2/00—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles
    • B60N2/02—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles the seat or part thereof being movable, e.g. adjustable
    • B60N2/22—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles the seat or part thereof being movable, e.g. adjustable the back-rest being adjustable
    • B60N2/235—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles the seat or part thereof being movable, e.g. adjustable the back-rest being adjustable by gear-pawl type mechanisms
    • B60N2/2356—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles the seat or part thereof being movable, e.g. adjustable the back-rest being adjustable by gear-pawl type mechanisms with internal pawls
    • B60N2/2358—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles the seat or part thereof being movable, e.g. adjustable the back-rest being adjustable by gear-pawl type mechanisms with internal pawls and provided with memory locks

Definitions

  • This invention relates to a vehicle seat position adjusting device, and more particularly, the invention relates to a vehicle seat position adjusting device which includes a walk in mechanism that allows the frontward sliding movement of the vehicle seat relative to a vehicle floor when a seat back is forwardly rotated to a predetermined angle relative to the seat cushion.
  • the seat position adjusting device is known, for example, by a Japanese Patent Publication 10-44838 A.
  • the seat position adjusting device includes a slide adjuster having a slide lock mechanism for slidably supporting the vehicle seat relative to the vehicle floor and holding the seat to a predetermined position relative to the vehicle floor by restricting the slidable movement of the seat relative to the floor, a reclining adjuster provided between the slide adjuster and the reclining adjuster for rotatably supporting the seat back of the seat relative to the seat cushion of the seat around the rotational axis line and a walk in mechanism for allowing the sliding movement of the seat relative to the vehicle floor by actuating the slide lock mechanism of the slide adjuster when the seat back is rotated to a predetermined angle relative to the seat cushion.
  • the walk in mechanism of this publication includes a detecting plate for detecting the rotation angle of the seat back relative to the seat cushion.
  • This detecting plate is supported at a tip end of the rotation shaft, which forms a rotation axis line for seat cushion.
  • the detecting plate engages with the seat back and rotates together with the seat back around the rotation shaft when the seat back is rotated to a predetermined angle relative to the seat cushion.
  • the detecting plate detects the rotation of the seat back relative to the seat cushion.
  • the detecting plate is arranged protruding sideward from the reclining adjuster. This is because the detecting plate is provided at the tip end of the rotation shaft. This will require the space in sideward in seat width direction. In a very limited space in the occupant compartment, the seat size has to be limited in a seat width direction.
  • a vehicle seat position adjusting device includes a slide adjuster having a slide lock mechanism for slidably supporting a vehicle seat relative to a vehicle floor and holding the vehicle seat at a predetermined position relative to the vehicle floor by restricting a relative sliding movement of the vehicle seat relative to the vehicle floor, a reclining adjuster for rotatably supporting a seat back of the vehicle seat about a rotational axis line relative to a seat cushion of the vehicle seat, and a walk in mechanism disposed between the slide adjuster and the reclining adjuster for actuating the slide lock mechanism of the slide adjuster to allow the sliding movement of the vehicle seat relative to the vehicle floor when the seat back is rotated equal to or more than a predetermined angle relative to the seat cushion by operating the reclining adjuster.
  • the walk in mechanism includes a detecting plate for detecting the predetermined angle or more than the predetermined angle rotation of the seat back relative to the seat cushion to the predetermined and the reclining adjuster includes a supporting surface arranged at an outer profile of the reclining adjuster in parallel to an extension direction of the rotational axis line of the seat back relative to the seat cushion.
  • FIG. 1 shows a perspective view of the vehicle seat installed with a seat position adjusting device according to the invention
  • FIG. 2 shows a cross sectional view taken along the line II-II of FIG. 1 ;
  • FIG. 3 shows a perspective view of the walk in mechanism of the seat position adjusting device according to the invention
  • FIG. 4 shows a cross sectional view taken along the line IV-IV of FIG. 1 ;
  • FIG. 5 shows a view seen from the arrow C of FIG. 4 ;
  • FIG. 6 shows a perspective view of the walk in mechanism of the seat position adjusting device according to the invention.
  • the vehicle seat positioned so as to be slidably supported by the seat adjuster 2 in a vehicle longitudinal direction relative to the vehicle floor (in a left and right direction in FIG. 1 ), and so as to be capable of being supported at a predetermined longitudinal adjustment position, includes a seat cushion 3 that forms a seating surface and a seat back 4 that forms a reclining seat for the back.
  • the seat back 4 is put into position by the reclining adjuster 5 at the rear portion of the seat cushion 3 so as to be rotatably supported in a vehicle longitudinal direction relative to the seat cushion 3 , and so as to be capable of being supported at a predetermined angle-adjustment position.
  • the seat slide adjuster 2 includes a lower rail 21 , an upper rail 22 and a lock plate 23 .
  • the lower rail 21 is of an oblong shape extending in a longitudinal direction of the seat (the same direction as the vehicle longitudinal direction mentioned above), and front and rear end portions of the lower rail are fixed to the vehicle floor.
  • the lower rail 21 assumes a substantially U-shape, and a pair of engaging flanges are formed on both the right and left ends of the cross section.
  • the upper rail is of an oblong shape extending in a longitudinal direction, and is attached to the frame 31 of the seat cushion 3 (illustrated in FIG. 1 and FIG. 6 ).
  • the upper rail 22 assumes a substantially reverse T-shape, and a pair of engaging flanges 22 a are formed on both the right and left ends of the cross section.
  • the upper rail 22 is made to engage with engaging flanges 21 a of the lower rail 21 through balls 27 , and the upper rail 22 is slidably supported by the lower rail 21 in a longitudinal direction through rollers 28 .
  • the end result of this is that the vehicle seat is slidably supported relative to the vehicle floor in a vehicle longitudinal direction.
  • the lock plate 23 is rotatably supported in a width direction of the upper rail 22 (in a left and right direction in FIG. 2 ) by a supporting shaft 24 a supported by a bracket 24 fixed to the upper rail 22 .
  • Multiple locking holes 21 b are formed on the lower rail 21 in a longitudinal direction.
  • An engaging hook 23 a capable of engaging with one of the lock holes 21 b, are formed on the lock plate 23 , and, by virtue of engagement between the one of the lock holes 21 b and the engaging hook 23 a, sliding movement of the upper rail 22 relative to the lower rail 21 is restricted.
  • the vehicle seat 1 is supported at a predetermined longitudinal adjustment position relative to the vehicle floor.
  • an operating flange 23 b that faces the engaging hook 23 a is formed across the supporting shaft 24 a.
  • a first release lever 25 rotatably supported by the upper rail 22 and extending in a longitudinal direction of the rail, is connected through the operating flange 23 b.
  • the first release lever 25 is connected at one end to an operating rod 26 , and at the other end pressing flange 25 a is formed that presses the operating flange 23 b of the lock plate 23 .
  • the pressing flange 25 a press the operating flange 23 b of the lock plate 23 , and the lock plate 23 rotates about the supporting shaft 24 in an anti-clockwise direction, as illustrated in FIG. 2 .
  • the reclining adjuster 5 includes a lower plate 6 , an upper plate 7 and three pawls 51 .
  • the lower plate 6 is made of round-shaped board material and is fixed to the frame 31 of the seat cushion 3 by a process such as welding.
  • the upper plate 7 is also made of round-shaped board, and is fixed to the frame 41 of the seat back 4 by a process such as welding (as illustrated in FIG. 1 and FIG. 6 ).
  • Protruding portion 61 is formed on the lower plate 6 by a process of pressing on an outer side (a right direction in FIG. 4 ) of the lower plate 6 in a plate-thickness direction (a left-right direction in FIG. 4 ).
  • the protruding portion 61 form recessed receptacle portion 62 at the lower plate 6 , recessed receptacle portion 62 that faces an inner side of the lower plate 6 in a plate-thickness direction.
  • a protruding portion 71 (a projected portion) is formed on the upper plate 7 by a process of pressing on an inner side (left side in FIG. 4 ) of the upper plate 7 in a plate-thickness direction (a left and right direction in FIG. 4 ).
  • This protruding portion 71 forms a recessed portion 72 on the upper plate 7 , on an outer side of the upper plate in a plate-thickness direction (the right side as illustrated in FIG. 4 ).
  • the recessed receptacle portions 62 , 72 respectively on the lower plate 6 and the upper plate 7 , are positioned so as to face one another.
  • the lower plate 6 and the upper plate 7 are rotatably linked by a ring 8 to face one another at outermost circumferences.
  • the seat back 4 is rotatably supported in a longitudinal direction relative to the seat cushion 3 .
  • the lower plate 6 and the upper plate 7 formed in this fashion thus form an internal void D in the shape of the recessed receptacle portions 62 and 72 .
  • the lower plate 6 rotatably supports a rotation shaft 52 around the rotational axis 0 that passes through the upper plate 7 by crossing an internal void D.
  • the rotation shaft 52 supports a cam 53 , positioned in the internal void D, so as to rotate integrally.
  • Three pairs of guiding surfaces 63 are formed, by a process of pressing, in an axial direction, a direction identical to that of a plate-thickness direction, and, moreover, an extending direction of the rotational shaft 52 , so as to protrude into the internal void D and face each other at predetermined distances, and so as to be positioned within the recessed receptacle portions 62 .
  • These guiding surfaces 63 extend in a radial direction of the lower plate 6 .
  • a circumferential ratchet 73 which protrudes into the internal void D in a radial direction, is formed, by a process of pressing, on the recessed portions 72 of the upper plate 7 so as to be disposed in the recessed receptacle portions 62 .
  • the three pawls 51 are housed in the internal void D, are slidably guided relative to the guiding surfaces 63 of the lower plate 6 and are disposed so as to be capable of engaging with the circumferential ratchet 73 of the upper plate 7 , and so as to face the cam 53 .
  • These pawls 51 are pressed from a rear surface by the cam 53 and engage with the ratchet 73 ; and, as a result of a cam interaction between cam elongated holes 51 a, formed at the pawls 51 , and projections 53 a that have been formed at the cam 53 , the pawls 51 slide along the guiding surfaces 63 by virtue of the rotation of the cam 53 .
  • the rotation shaft 52 supports an operation lever 54 so as to rotate integrally. Moreover, when the operation lever is operated so as to rotate, the cam 53 rotates, together with the rotation shaft 52 , in a clockwise direction, as illustrated in FIG. 5 ; pressing on the pawls 51 by the cam 73 is released, and the pawls 51 slide in a radial inner side direction along the guiding surfaces 63 . Thus, engagements between the pawls 51 and the circumferential ratchet 73 are released, and in consequence the upper plate 7 becomes capable of rotating relative to the lower plate 6 .
  • the seat back 4 rotates in a seat longitudinal direction relative to the seat cushion 3 .
  • the cam 53 is subjected to the biasing force of the spring 55 provided around the rotation shaft 52 , and the pawls 51 are consistently biased in a counter clockwise direction, as illustrated in FIG. 5 , so as to press the pawls 51 and thus engage with the circumferential ratchet 73 .
  • the upper plate 7 is consistently subjected to a biasing force by a spring 56 provided between the upper plate 7 and the lower plate 6 so as to rotate in a seat forward direction relative to the lower plate 6 .
  • a bracket 42 is fixed to the frame 41 of the seat back 4 for purposes of engaging the spring 56 .
  • circumferential stoppers 74 are formed by a pressing process so as to be positioned on the inner side of the circumferential ratchet 73 , and thus capable of making contact with the pawls 51 in a circumferential direction, and the circumferential stoppers 74 are disposed within the recessed receptacle portion 62 .
  • a maximum rotating angle of the upper plate 7 at the front of the seat relative to the lower plate 6 , and a maximum rotating angle of the upper plate 7 at the rear of the seat relative to the lower plate 6 are both controlled as a result of the contact between the stoppers 74 and the pawls 51 .
  • the external appearance of the protruding portion 71 takes the form of round steps 71 c, including a first horizontal surface 71 a that follows an axial direction to relate to the circumferential ratchet 73 , and a second horizontal surface 71 b, serving as a supporting surface, that follows an axial direction to relate to the circumferential stopper 74 .
  • a second release lever 91 is rotatably supported by a pin 91 b.
  • a pressure pin 91 a which pressures the pressing flange 25 a of the first release lever 25 , is provided between the operating flange 23 b of the lock plate 23 and the pressing flange 25 a.
  • a detection plate (a detecting plate) 92 is relatively and rotatably supported by the horizontal surface 71 b of the protruding portion 71 .
  • an engaging hook 92 a is formed so as to protrude in a radial direction.
  • This engaging hook 92 a is positioned so as to engage with the bracket 42 of the frame 41 of the seat back 4 .
  • the engaging hook 92 a engages with the bracket 42 .
  • the upper plate 7 and the detection plate 92 start to rotate together in an identical direction.
  • a rod 93 connects the second release lever 91 and the detection plate 92 , and the structure is such that the rotation of the detection plate 92 is transmitted to the second release lever 91 through the rod 93 .
  • the rotation of the second release lever 91 is achieved by rotating the lock plate 23 in an anti-clockwise direction, as shown in FIG. 2 , through the pressing flange 25 a of the first release lever 25 , and engagement between the engaging hook 23 a of the lock plate 23 and the lock hole 21 b of the lower rail 21 is thereby released.
  • the vehicle seat is subjected to the biasing force of the spring and slides in a vehicle forward direction relative to the vehicle floor.
  • the detection plate 92 of the walk-in mechanism 9 is supported by the second horizontal surface 71 b of the upper plate 7 of the reclining adjuster 5 , and the reclining adjuster 5 and the detection plate 92 are positioned on an identical surface in an axial direction.
  • the detection plate 92 in comparison with related art, it is possible to position the detection plate 92 without space in an axial direction being sacrificed, and it is thus possible to use effectively the space within a vehicle compartment.
  • the second horizontal surface 71 b that supports the detection plate 92 is formed within the protruding portions 71 that form the recessed receptacle portions 72 of the upper plate 7 , special processing does not need to be carried on the upper plate 7 for the detection plate 92 to be supported by the upper plate 7 , and it is accordingly possible to achieve a simple structure at a modest cost.
  • the detection plate 92 is supported by the second horizontal surface 71 b of the upper plate 7 , but it is also possible for the detection plate 92 to be supported by the first horizontal surface 71 a, or, alternatively, by the outer circumferential surface of the ring 8 and the outer circumferential surface of the protruding portion 61 of the lower plate 6 .

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  • Engineering & Computer Science (AREA)
  • Aviation & Aerospace Engineering (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Seats For Vehicles (AREA)
US11/090,257 2004-03-30 2005-03-28 Vehicle seat position adjusting device Active 2025-08-06 US7461898B2 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2004100347A JP4645054B2 (ja) 2004-03-30 2004-03-30 車両シート位置調整装置
JP2004-100347 2004-03-30

Publications (2)

Publication Number Publication Date
US20050231016A1 US20050231016A1 (en) 2005-10-20
US7461898B2 true US7461898B2 (en) 2008-12-09

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ID=34879986

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Application Number Title Priority Date Filing Date
US11/090,257 Active 2025-08-06 US7461898B2 (en) 2004-03-30 2005-03-28 Vehicle seat position adjusting device

Country Status (5)

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US (1) US7461898B2 (zh)
EP (1) EP1582399B2 (zh)
JP (1) JP4645054B2 (zh)
CN (1) CN100497039C (zh)
DE (1) DE602005020708D1 (zh)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20130313878A1 (en) * 2012-05-27 2013-11-28 Chang Chen Lin Angle adjusting/positioning device for a backrest of a chair
US8708412B2 (en) 2008-01-17 2014-04-29 Fisher & Company, Incorporated Round recliner mechanism
US20140374561A1 (en) * 2013-06-20 2014-12-25 Toyota Boshoku Kabushiki Kaisha Conveyance seat
US9296315B2 (en) 2013-02-26 2016-03-29 Fisher & Company, Incorporated Recliner mechanism with backdriving feature
US9902297B2 (en) 2014-06-11 2018-02-27 Fisher & Company, Incorporated Latch mechanism with locking feature

Families Citing this family (8)

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Publication number Priority date Publication date Assignee Title
FR2959457B1 (fr) * 2010-04-28 2014-01-24 Peugeot Citroen Automobiles Sa Glissiere de siege de vehicule
DE102010020558A1 (de) * 2010-05-14 2011-11-17 Gm Global Technology Operations Llc (N.D.Ges.D. Staates Delaware) Verstellvorrichtung zum Verstellen einer Rückenlehne eines Fahrzeugssitzes
CN102141364B (zh) * 2010-11-20 2013-03-06 无锡曙光模具有限公司 轿车座椅拖把管的检具结构
US9476040B2 (en) 2011-05-02 2016-10-25 Board Of Regents Of The University Of Nebraska Plants with useful traits and related methods
CN102555866A (zh) * 2011-12-14 2012-07-11 虞海盈 一种汽车用空气悬浮座椅
FR3014042B1 (fr) * 2013-11-29 2017-03-17 Eads Sogerma Siege passager a structure baquet et position ajustable
JP6682300B2 (ja) * 2016-03-04 2020-04-15 シロキ工業株式会社 シートリクライニング装置
CN116176372A (zh) * 2022-12-21 2023-05-30 中国第一汽车股份有限公司 一种电机信号触发机构、汽车座椅总成及汽车

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US4025109A (en) * 1973-05-23 1977-05-24 Firma Fritz Keiper Fitting for adjustably connecting a backrest member to a seat member
FR2731186A1 (fr) 1995-03-01 1996-09-06 Pastore Gerard Dispositif a glissiere pour siege de vehicule permettant l'escamotage de ce siege vers l'avant
JPH1044838A (ja) 1996-07-31 1998-02-17 Aisin Seiki Co Ltd 車両用シートのウォークイン装置
US5740999A (en) 1994-07-04 1998-04-21 Aisin Seiki Kabushiki Kaisha Seat sliding mechanism
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US6641218B2 (en) 2001-02-08 2003-11-04 Nhk Spring Co., Ltd Seat apparatus for automobile
US6830296B2 (en) * 2002-09-30 2004-12-14 Aisin Seiki Kabushiki Kaisha Walk-in apparatus for vehicle seat

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US5740999A (en) 1994-07-04 1998-04-21 Aisin Seiki Kabushiki Kaisha Seat sliding mechanism
FR2731186A1 (fr) 1995-03-01 1996-09-06 Pastore Gerard Dispositif a glissiere pour siege de vehicule permettant l'escamotage de ce siege vers l'avant
US5882074A (en) * 1996-07-31 1999-03-16 Aisin Seiki Kabushiki Kaisha Walk-in apparatus for a vehicle seat
JPH1044838A (ja) 1996-07-31 1998-02-17 Aisin Seiki Co Ltd 車両用シートのウォークイン装置
US5882014A (en) 1996-09-13 1999-03-16 Gavin; Norman W. Removable section pipe seal for septic systems
EP0872375A2 (de) 1997-04-16 1998-10-21 Keiper GmbH & Co. Neigungseinstellbeschlag mit Freischwenkeinrichtung für Rückenlehnen von Kraftfahrzeugsitzen
US6341819B1 (en) * 1998-12-25 2002-01-29 Aisin Seiki Kabushiki Kaisha Seat slide device for a vehicle
JP2002065387A (ja) * 2000-08-30 2002-03-05 Aisin Seiki Co Ltd 車両用シートリクライニング装置
US6715835B2 (en) * 2000-08-30 2004-04-06 Aisin Seiki Kabushiki Kaisha Seat reclining apparatus
US6609756B2 (en) * 2000-09-28 2003-08-26 Aisin Seiki Kabushiki Kaisha Seat reclining device for vehicle
US6641218B2 (en) 2001-02-08 2003-11-04 Nhk Spring Co., Ltd Seat apparatus for automobile
US6830296B2 (en) * 2002-09-30 2004-12-14 Aisin Seiki Kabushiki Kaisha Walk-in apparatus for vehicle seat

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Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8708412B2 (en) 2008-01-17 2014-04-29 Fisher & Company, Incorporated Round recliner mechanism
US20130313878A1 (en) * 2012-05-27 2013-11-28 Chang Chen Lin Angle adjusting/positioning device for a backrest of a chair
US9296315B2 (en) 2013-02-26 2016-03-29 Fisher & Company, Incorporated Recliner mechanism with backdriving feature
US20140374561A1 (en) * 2013-06-20 2014-12-25 Toyota Boshoku Kabushiki Kaisha Conveyance seat
US9296313B2 (en) * 2013-06-20 2016-03-29 Toyota Boshoku Kabushiki Kaisha Conveyance seat
US9902297B2 (en) 2014-06-11 2018-02-27 Fisher & Company, Incorporated Latch mechanism with locking feature

Also Published As

Publication number Publication date
EP1582399A3 (en) 2006-05-24
JP4645054B2 (ja) 2011-03-09
EP1582399A2 (en) 2005-10-05
EP1582399B1 (en) 2010-04-21
CN1676366A (zh) 2005-10-05
DE602005020708D1 (de) 2010-06-02
US20050231016A1 (en) 2005-10-20
JP2005280595A (ja) 2005-10-13
CN100497039C (zh) 2009-06-10
EP1582399B2 (en) 2016-12-28

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